This repository contains the firmware and gerber files for the open source DAVEga. For DAVEGA X (not open source), please go to davega.eu.

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DAVEga (The VEsc GAuge/GAdget), or Dave for short, displays speed, battery capacity, traveled distance and other useful info retrieved from a VESC based controller.

This repository contains the DAVEga firmware. The gerber files can be downloaded from the gerbers directory or from EasyEDA.

There's a story behind the name, but it's a long one. It all started on esk8 builders. Here's some highlights from the discussion.

Main features

• speedometer
• odometer
  • current trip
  • total traveled distance
• remaining battery capacity
  • battery voltage
  • battery amp-hours remaining
• VESC fault codes
• metric or imperial units
• Arduino compatible FW
• low HW cost (~$10)
• known to work well with the VESC FW v3.48 and v3.40
  • previous versions not tested but should work as well unless too old
• FOCBOX Unity supported

Configuring and installing firmware

The firmware has to be configured for a particular e-skate. At the very least, the information about the wheel size, gearing, and the battery pack has to be provided.

1. Open the Arduino IDE.
2. Install the TFT_22_ILI9225 library.
   • Go to https://github.com/Nkawu/TFT_22_ILI9225 and do Clone or download > Download ZIP.
   • Open the Arduino IDE and do Sketch > Include Library > Add ZIP file... Then select the downloaded ZIP file.
3. Download DAVEga firmware from releases and unzip to your Arduino project directory (typically $HOME/Documents/Arduino/).
4. Open the davega.ino from Arduino IDE to load the project.
5. Go to the davega_config.h tab and adjust the configuration to your needs.
6. Connect DAVEga to your computer using a USB-UART adapter. Make sure you have drivers for the adapter installed. The DIY kit comes with the CP2102 based adapter.
7. Under Tools, select:
   • Board: Arduino Nano
   • Processor: ATmega328P
   • Port: the port to which the USB-UART is connected (e.g. /dev/cu.SLAB_USBtoUART for CP2102 adapter on a Mac)
8. Upload.

Configuring the ESC

In the VESC Tool set:

1. App Settings > General > App to Use: PPM and UART
2. App Settings > UART > Baudrate: 115200 bps

License

DAVEga firmware and hardware design is released under GNU GPL v3.

Enclosures

3D-printable DAVEga enclosures are available on the Thingiverse.

• by @mmaner (v2)
• by @mmaner (v3)
• by @lrdesigns
• by @JonathanLau1983

Links

• DAVEga video presentation (first prototype)
• DAVEga thread at esk8 builders forum
• DAVEga assembly video
• DAVEga cable tips:
  • Making a basic cable
  • Making an advanced cable
  • Misc cable ideas
• DAVEga on Arduino Nano
• DAVEga coding crash course
• DAVEga kits for purchase
• DAVEga SLA printed case for purchase
• DAVEga 2.0" display purchase links
  • AliExpress (verified seller)
  • Amazon (faster delivery but more expensive)
• VESC project
• DAVEGA X (more advanced commercial version of DAVEGA)